Yes, the invoice can be easily printed or downloaded from the Booking Invoice email.
Once you have received the booking invoice email. Click on "Print Option". Click as "save as PDF"

On Mac, Invoices can be also saved by taking a screenshot -
To take a screenshot, press and hold these three keys together: Shift, Command, and 3. The screenshot will be saved on your desktop.

For others, an Invoice image can be taken by clicking on "PrtSc" on your keyword and select the area you would like to save. Print can be taken from the image saved.
Note. This button can be placed in different positions on different laptop models.

Related articles -
How to generate & send an invoice?
How to add company terms & conditions?
Batch Invoicing: Batch multiple bookings from one customer into a single Invoice
FAQs -
How do I know if an invoice is paid?
How do I update the Billing Address on the Invoice?
Can I send an invoice to multiple people at the same time?
Can I download & print the invoice?